1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <filesystem>
10
11 // class path
12
13 // bool empty() const noexcept;
14
15 // UNSUPPORTED: c++03, c++11, c++14, c++17
16 // UNSUPPORTED: availability-filesystem-missing
17
18 #include <filesystem>
19 namespace fs = std::filesystem;
20
f()21 void f() {
22 fs::path c;
23 c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
24 }
25